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1. ermoscreens PHV SURFACE MOUNTED HEAT PUMP AIR CURTAINS INSTALLATION OPERATION amp MAINTENANCE INSTRUCTIONS M W i D Ganz A N id ee eh MM K Coach bth i SC EH SE WENNS Gs Zu at CLA Ca 1 vi i A RO Vea Ou i NM Wat NAMSNORANKNAMAMANCNaNt RU SALA MLL Vai k ui nents In Tae vo ee ht ki re vi CUAL GALL d Wa VO ioo eae V WAN UORUU ee r i H Ve WAR d pa NI Ay Seely SEH For use with CITY MULTI VRF units PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING INSTALLATION Thermoscreens Ltd St Mary s Road Nuneaton Warwickshire England MITSUBISHI Ne 47 MA ELECTRIC Email sales thermoscreens com AIR CONDITIONING SYSTEMS Tel 44 0 24 7638 4646 Fax 44 0 24 7638 8578 www thermoscreens com 9901035 2 Page 1 of 31 cke a ta eatat AIA ermanent e C fo II Thermoscreens Mitsubishi Electric Thermoscreens City Multi Heat Pump Air Curtains can be used with Mitsubishi Electric City Multi Y WY Series Heat Pump or City Multi R2 WR2 Series Heat Recovery systems City Multi Y WY Series Heat Pump Air Curtain System City Multi Y WY Series Heat Pump Air Curtain Schematic 1 em iar en ge oe aa COOC OH CW JIT TOLEA SW l aaa i PAC AH AHU WW Controller LEV s I l X TTT lee che 1 Power l Fan e L Air Curtain Heat Pump p D ll d d H Remote 3 Speed Fan Switch Mitsubishi Electric l PAR 21MA
2. WVYDVIC 9NIHIM galarr HW My mech Mal la IHSIHASI OIOD oe ZHOS UdE A0D0Ov _is ONINI DIE ro 10 Ajddng jeo14999 9 ZHOS YdE A0Or seyd Jad verts OOOZAHd AYA seyd Jad WL ZT OOSTAHd AYA aseyd Jad vg OOOTAHd AYA eee a suey pue siajeay 21174913 94 ld IHSIENSLIA ysoujaq 104 Ajddng e211 14 12207 6ulzesodo si ureyin wile UBYM juo DAI JAI DU T Jeulway SN dung ajyesuapuo7 104 Ajddns e2193 DC UI mr O D e Z O O Q L UI D ep O r a lt Z O e D O umoys p ds ue4 WNIp NW Uu ue4 paeds Bulsn 0U J INO ANTI XQOOOZAHd AYA 405 VL C XGOOSTAHd JHA 495 V8 T XCOOOTAHd AYA 405 VE T ZHOS YOT AOEZ Ua S T1 p p u Udy JOU Jue 7 pue e ONT ISUILLLIS Aserixne ul Ajajes al a eUILUJa pue zy WO DIM jd nd p uuos p p nb Jou ae s u w 4 Dungat 211914 YsOujaq J MI6 MAIDVDEXE pun wz MAS L MASZ ze PUN WS T NAG MASTXE Wun WT oe E HLYVS 6 Jeu TWYHLNAN 8 Guiot SOW Je Je BAIT JAI JU UeWWIAad Z JeUIWAa 0 dNNd vn SNSSYOSOWYSHL Page 15 of 31 9901035 2 SG Wiring to PAC AH AHU Controller and Controls Wiring The Mitsubishi Electric PAC AH AHU Controller needs to be located within 7m from the air curtain cables are 8m long It has four mounting feet to
3. 400V 3ph 50Hz ii 230V 1ph 50Hz if defrost electric heaters are required if defrost electric heaters are not used Rated Electrical Rated Current per Rated Electrical cer Power m kW phase A Power Input kW REH Air Curtain EE If the defrost electric heaters are not to be used they can be disabled by disconnecting the neutral to the contactor coil inside the air curtain see below and wiring diagrams on Pages 14 amp 15 Note If the defrost electric heaters are disconnected discharge air temperatures could be very cold approximately 6 C Defrost times could also be extended particularly with the R2 Series System The photo above shows the completed The photo above shows the completed wiring to terminals L1 L2 L3 N and wiring to terminals L1 N and Earth Earth for a 3 phase electrical supply for a single phase electrical supply 400v 3ph 50Hz if defrost electric 230v 1ph 50Hz if defrost electric heaters are used heaters are not used NB Electric heaters must be disabled for 1 phase Do not use cable size of more than 2 5mm or connecting the cable is difficult See also wiring diagram on page 14 or page 15 If the defrost electric heaters are to be disabled this can be done by disconnecting the purple neutral wire from terminal A2 on the contactor inside the air curtain The disconnected purple wire should be terminated safely into unused auxiliary terminal 14NO as shown in the adjacent
4. AHU Controller There are two versions that can be used PAC AH M G and PAC AH M H the supply of which is dependent on the EU state country where the installation is being carried out The rated size of the PAC AH AHU Controller needs to be matched to the size of the heat pump air curtain Each size of AHU Controller comes with different size LEV s and number of LEVs so they need to be matched to the air curtain The table shows the AHU Controller to be selected and performance data for the air curtain LEV s Maximum Heat No Off Index Size VRE PHV1000 PAC AH125M G Type P632411X01 DXE HO or 1 off PAC AH125M H P100 VRE PHV1500 PAC AH125M G Type yeaa DXE LO Gei O 10 6 PAC AH125M H P125 VRF PHV1500 PAC AH140M G Type DXE HO or O 15 1 PAC AH140M H P140 PAC AH AHU Controller Pump Output kW Air Curtain VRE PHV2000 PAC AH140M G Type DXE LO OF O 14 8 PAC AH140M H P140 VRE PHV2009 PAC AH250M G Type an DXE HO Gi O 19 3 PAC AH250M H P200 Maximum heat pump output refers to the heating or cooling output from the air curtain air stream Figures are derived from laboratory testing with reference to test standard EN14511 They are with the air curtain operating at high fan speed outdoor air temperature 7 6 C db wb indoor air temperature 20 C db for heating outdoor air temperature 35 27 C db wb indoor air temperature 27 C db for cooling Contact Mitsubishi Electric for performance at other outdoor
5. P140 NOTE Contact Mitsubishi Electric for recommended pipework lengths numbers of fittings etc The installation must be done in accordance with the Mitsubishi Electric Service Manual It is intended that refrigerant pipe connections to the air curtain are made using brazed joints and these must be carried out in a professional and safe manner If installation pipe sizes for the discharge gas line and liquid line are different from the pipe connection sizes on the air curtain suitable pipe reducers must be used for the connection R410A refrigerant systems can operate at pressures up to 610 psi c 42 Bar These brazed joints may well be located in a public area and a weakness leading to an explosion could be extremely dangerous The air curtain with its coil is manufactured in accordance with the Pressure Equipment Directive and the installation must be carried out to a good standard of workmanship Remove the protective plastic film on top of the air curtain before starting work Use a heat sink on the copper pipes when brazing to reduce the transfer of heat to the inside of the air curtain where sensitive components are located Make sure the thermistor gas sensor has not been inserted into its pocket on the gas pipe at the top of the air curtain before brazing Remove it if it has or it will burn when the pipe connection is brazed For the City Multi system the LEV needs to be brazed into the liquid line as close as possible to the air
6. 3 turns the rear row of Remove the front row of drain tray drain tray fixing screws along the fixing screws along the whole whole length of the tray Do not length of the drain tray Keep the remove these screws completely screws The drain tray now angles down along its front edge and the inside surface of the tray can be easily cleaned Remove all debris from the drain tray outlet spout and condensate hose Check there are no kinks in condensate hoses If the condensate pump is a peristaltic type change the rubber pump head tube Once the air curtain has been cleaned visually inspect the air curtain components Ensure pipe temperature sensors are located in their pockets and any foam insulation covering these pockets is un damaged Check the location of the thermal overheat cut out and air sensor and that the thermal overheat cut out switch has not tripped see Section Commissioning Page 20 Check all electrical connections and terminals within the unit are tight and that crimp connections have not become loose 9901035 2 Page 27 of 31 Refit the drain tray bottom access panel and air inlet grilles with filters Switch on the electrical supplies and fully function test the air curtain to ensure correct operation see section Commissioning Page 20 Check the condensate pump operates if fitted FILTER INDICATION Reset the Filter Dirty Indicator after the service by pressing the Reset Button for at least 5 second
7. Rower I l curtain r KT Fans A Sensors Heat Pump b a ee oe Defrost signal Air Curtain l Cond alarm l N l Mitsubishi Electric PAR 21MAA Compressor Unit EI remote iE lio See controller Far Gap ei ite Mitsubishi Electric BMS Control Indoor Units Refrigeration pipework Electrical Controls cables City Multi R2 WR2 Series System Indoor Units and Air Curtains s can operate on heating or cooling simultaneously e g some indoor units are cooling whilst other indoor units and air curtain are heating at the same time The City Multi R2 WR2 Series heat recovery system with Heat Pump Air Curtain s consists of e One or more Thermoscreens VRF PHV Heat Pump heating and cooling Air Curtains e A Mitsubishi Electric PAC AH M G AHU Controller or PAC AH M H AHU Controller one for each air curtain A Mitsubishi Electric PAR 21MAA Remote Controller one for each AHU Controller One or more Mitsubishi Electric City Multi R2 WWR2 Series Compressor Unit Mitsubishi Electric BC Controller Mitsubishi Electric Indoor Unit s NB Can be used on a full air curtain basis if required up to 100 diversity e Mitsubishi Electric BMS System or Centralised Controller if required supplied by Thermoscreens Lid supplied by others 9901035 2 Page 3 of 31 DESIGN INFORMATION Each Thermoscreens Heat Pump Air Curtain needs to operate with a Mitsubishi Electric PAC AH
8. curtain 2m maximum The picture shows an example of this On the VRF PHV2000 DXE HO there are two LEVs to be fitted in parallel see Mitsubishi Electric AHU Controller instructions If required the LEV s can be hidden away in an adjacent void or above ceiling tiles and pipework can be hidden inside the optional sheet metal services covers see Page 8 For the City Multi VRF R2 and WR2 Series system pipework from each air curtain must connect to one pair of ports on the Mitsubishi Electric BC Controller The exception to this is the VRF PHV2000 DXE HO air curtain that requires 2 pairs of ports on the BC Controller to achieve the correct output Do not combine pipework from two or more air curtains together into one set of pipework and then connect this to one pair of ports NB A maximum P140 Index is possible from 1 pair of ports contact Mitsubishi Electric 9901035 2 Page 11 of 31 To gain access inside the Air Curtain To gain access for connection of the electrical supply controls wiring and to work on the unit during commissioning remove the air inlet grilles and the bottom access panel First remove the plastic end caps if already fitted by pulling off to the side see picture Hu at kd RH Bei RREN AHR Then remove each inlet grille in turn with its filter by unfastening the M4 Pozi Head screw at the bottom corner of the grille Use a Pozi No 1 screwdriver to access the screw via the elongated hole at each bott
9. electricity supply both at the local electrical supply to the Air Curtain and to other Mitsubishi Electric equipment in the City Multi system before servicing maintaining or repairing the Air Curtain Note All servicing maintenance and repairs to the air curtain must be carried out by an approved Service Agent Remove the plastic end caps by pulling off to the side as shown USAR 5 HEIR Remove each Air Inlet Grille with its air filter by unfastening the M4 Pozi Head screw at the bottom corner of the grille Use a Pozi No 1 screwdriver to access the screw via the elongated hole at the bottom corners of the grille Remove the air filters from the air inlet grilles by gently prizing them free as shown Vacuum clean and refit the filters into the curved air inlet grilles The filters are very durable but may need to be replaced after a number of service intervals 9901035 2 Page 26 of 31 cas D EC Remove the bottom access panel by unfastening the panel fixing Oe o screws 2 on PHV1000 4 on PHV1500 amp 2000 units and sliding be the access panel out forwards Clean the inside of the access panel Bottom Access Panel Vacuum clean and remove any build up of dust dirt and debris within the air curtain especially on the face of the coil and the electric heating elements Note Fan motors are permanently lubricated and require no additional lubrication If the Air Curtain has been used in Cooling Loosen by
10. fix it to a wall or alternatively it can be placed on a horizontal flat surface if located in a compartment or ceiling void It comes pre wired with various 8m long cables for power supplies Ss thermistor sensors LEV s alarms etc which have to be connected f to the air curtain It can be hidden behind a nearby bulkhead or in an adjacent room so it is out of view although it must be accessible for future service work if necessary Each of the pre wired cables has a label attached to it at the end of the cable showing where it has to be N EF connected at the air curtain The following table lists the connections to be made between the PAC AH AHU Controller and the Air Curtain Please note there are two types of AHU Controller PAC AH M G and PAC AH M H and wiring of some cables and components is different for each type This is indicated in the table below See also wiring diagram on Page 14 for PAC AH M G and Page 15 for PAC AH M H Controller Termination at Cable Component Termination at Air Type PAC AH Curtain wired to terminals E N L curtain to PAC AH 230v ac POWER SUPPLY wired to terminals D1 D2 start Air Curtain 230v ac OPERATION SIGNAL M G and M H 8m 2 core cable pre Defrost signal from PAC AH to wire to terminals 5 amp 6 plugged into CN52 on operate contactor in air curtain for PAC AH pcb defrost electric heaters if used M G and M H 8m 2 core cable pre Thermistor Gas temperatur
11. that enter the air curtain from above They are available in sizes of 250mm 500mm and 1000mm high and are supplied flat packed for assembly on site The sheet metal covers are secured to the top of the air curtain via M6 screws into threaded inserts They hide hanging rods and all other services such as pipework cables condensate pump hoses optional fan speed controller etc Two covers can be fitted to PHV1000 units and three to PHV1500 and PHV2000 units see Figure 1 Page 9 Optional Fan Speed Controller An optional fan speed controller is available to provide a greater range to the three fan speeds in the air curtain Three fan speeds are still used but the speeds can be reduced to lower levels than the standard fan motor offers The controller is useful if noise levels are an issue on site as the fan speeds can be reduced accordingly The controller can be fitted to the air curtain retrospectively It does not fit inside the air curtain but comes with 2m cables so it can be hidden remotely from the unit or even inside one of the optional sheet metal covers Separate instructions come with the fan speed controller showing how it is connected to the air curtain and commissioned 9901035 2 Page 19 of 31 COMMISSIONING THE HEAT PUMP AIR CURTAIN Ensure that the electrical supply to the Air Curtain is switched off before starting any commissioning work Air Curtain Checks Check that the components inside the air curtain are as s
12. 1000DXE HO VRF PHV1I000RDXE HO VRF PHVIS500DXE LO VRF PHV1500RDXE LO VRF PHV1500DXE HO VRF PHVI500RDXE HO VRF PHV2000DXE LO VRF PHV2000RDXE LO VRF PHV2000DXE HO VRF PHV2000RDXE HO the Machinery Directive 2006 42 EC the Low Voltage Directive 73 23 EEC as amended by 93 68 EEC the Electromagnetic Compatibility Directive 89 336 EEC as amended by 91 31 EEC and 93 68 EEC the Pressure Equipment Directive 97 23 EC Machinery EN 292 1 EN 292 2 EN 294 EN 394 EN 414 LVD EN 60335 1 EN 60335 2 30 EN 60335 2 40 EMC EN55011 EN 61000 3 2 EN 61000 3 3 EN 61000 4 2 EN 61000 4 4 EN61000 4 5 EN61000 4 11 EN61000 6 4 PED EN 13134 EN 13133 Quality Assurance to BS EN ISO 9001 2000 B S I Registered Firm Certificate Number FM 85224 Mr M Francis Managing Director Thermoscreens Limited 17 J une 2009 Lem iy e ii li F j Page 31 of 31
13. 60 hrs 9901035 2 Page 23 of 31 To access the Filter Indicator pcb to change jumper position f Fixing i R screws 4 e Switch off the electrical power to the Heat Pump Air Curtain If the left hand plastic end cap is already fitted remove it from the air curtain Unfasten the two screws as indicated e Gently lower the left hand end of the outlet grille supporting it from below The Filter Indicator pcb is now accessible to change the jumper position Once the filter indicator pcb jumper has been re positioned push the outlet grille back up into place and fasten screws Hand over to End User Before leaving site it is important that there is a Hand Over Meeting to hand over the heat pump system and air curtain installation to the end user or their representative This should include a full and clear explanation of how the system operates and a demonstration showing the air curtain running Be sure to explain the Filter Indicator Schedule that the air inlet grilles must be regularly vacuum cleaned and the unit serviced at regular intervals If the air curtain is to be operated under manual control it is important that the end user understands how the Mitsubishi Electric PAR 21MAA Remote Controller and 3 Speed Fan Switch operate That the PAR 21MAA Remote Controller has been locked so only the ON Off button functions and the air curtain operates in AUTO mode with a fixed target temperature of 24 C If a c
14. A Compressor Unit n B remote Buum controller K Sr d f W Mitsubishi Electric BMS Control Indoor Units Refrigeration pipework Electrical Controls cables City Multi Y Series System Indoor Units and Air Curtains s all operate on heating at the same time or all operate on cooling at the same time The City Multi Y Series Heat Pump Air Curtain system consists of e One or more Thermoscreens VRF PHV Heat Pump heating and cooling Air Curtains e A Mitsubishi Electric PAC AH M G AHU Controller or PAC AH M H AHU Controller one for each air curtain e A Mitsubishi Electric PAR 21MAA Remote Controller one for each AHU Controller e One or more Mitsubishi Electric City Multi Y WY Series Compressor Unit e Mitsubishi Electric Indoor Unit s NB Can be used on a full air curtain basis if required up to 100 diversity e Mitsubishi Electric BMS System or Centralised Controller if required supplied by Thermoscreens Lid supplied by others 9901035 2 Page 2 of 31 City Multi R2 WR2 Series Heat Pump Air Curtain System City Multi R2 WR2 Series Heat Recovery Heat Pump Air Curtain Schematic lectrical supply BC Controller rermanent I ee I lS Gan l l I c D l l WI A mim Laf A a l i PAC AH AHU WW H AHU Controller 1 EV e Defrost ote if uced i l Controller LeVs 1 Defrost ers if used zz l Denne MA l 1 per air Te
15. an foot traffic Note It could still be possible for an end user to unlock a PAR 21MAA Remote Controller if they found out how to and switch it into cooling not realising that condensate would then flood out of the drain tray It may therefore be considered prudent to install a condensate pump and drain system even if it is intended that the unit should only be used in HEAT or FAN mode If a Building Management System BMS or Centralised Controller is to be used for control of the air curtain please contact Mitsubishi Electric for more details The air curtain is designed only for use with a Mitsubishi Electric City Multi VRF system for use on R410A The complete Thermoscreens Mitsubishi Electric heat pump system including fridge pipework wiring controls etc must be installed only by an approved Mitsubishi Electric refrigeration contractor The air curtain is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety High Output HO and Low Output LO in this document refers to the heat pump heating or cooling capacity of the Air Curtain not to any electrical rating HO air curtains have a 3 row coil LO air curtains have a 2 row coil These instructions must be read in conjunction with the Mitsubishi Electric instruct
16. and indoor conditions The air curtain normally operates under automatic temperature control set on the PAR 21MAA remote controller and can also run at part load The following City Multi compressor units can be connected For Y WY Series systems PUHY E P200 1250Y S HM A PQHY P200 600Y S HM A PUMY P100 140V Y HMB PUHY HP200 500Y S HM A For R2 WR2 Series systems PURY E P200 800Y S HM A PQRY P200 600Y S HM A 9901035 2 Page 4 of 31 The Thermoscreens Air Curtain requires a permanent mains electrical supply from a local switched isolator Electrical power to the PAC AH AHU controller is then fed from the air curtain Electrical power to the Mitsubishi Electric compressor unit s and BC Controller is fed separately in the normal way see separate Mitsubishi Electric instructions If the defrost cycle electric heaters inside the air curtain are to be used during the heating mode defrost cycle the electrical supply to the air curtain needs to be 3 phase 3L N E If the defrost cycle electric heaters are not required they can be permanently disconnected at installation and a single phase electrical supply 1L N E fed to the air curtain instead see Installation Electrical Supply Warning Air curtain fans continue to operate during heating mode system defrost to maintain an air stream across the doorway With the defrost cycle electric heaters operating the discharge air temperature from the air
17. curtain is kept to a few degrees below that of the indoor ambient air temperature during the duration of system defrost If the electric heaters are disconnected discharge air temperatures could be very cold approximately 6 C during the defrost and defrost times will also be extended particularly with the R2 Series System Defrost does not occur with WY and WR2 systems so the defrost cycle electric heaters should be disconnected on these systems There are various control cables that are wired on site to the PAC AH AHU Controller and the Thermoscreens Air Curtain that provide control for the operation of the unit These e Start Stop of air curtain fans e Operation of LEV s for control of heating or cooling output e Thermistor sensors e PAR 21MAA Remote Controller for end user manual control if used e On Off of electric heaters inside the air curtain during system defrost if used e Condensate alarm derived from condensate pump alarm sensor if used e M Net communications link to the Mitsubishi Electric Compressor Unit see also wiring diagrams The Thermoscreens Air Curtain is supplied with an integral condensate drain tray to enable the air curtain to be used in cooling mode during warm weather if so desired If it is intended to use the air curtain in cooling mode a condensate drain system and a suitable condensate pump not supplied by Thermoscreens must be supplied and fitted by the installer The condensate pump must be of sufficien
18. de detection alarm KK system and pump overrun A If Air Curtain is to be operated in COOL or If Air Curtain is to be manually controlled AUTO mode see text for more information also needed for commissioning The following optional equipment is also available for the air curtain Sheet metal covers to hide services Fan Speed Controller for low speeds For your records Date of urchase eee ees Place of burchaee Serial Number For warranty purposes proof of purchase is necessary so please keep a copy of your invoice 9901035 2 Page 8 of 31 INSTALLATION OF THE HEAT PUMP AIR CURTAIN The air curtain is designed to be surface mounted inside of the building and located horizontally over a doorway It must not be installed outside of the building or built into a cabinet or recessed in any way Location The air curtain must be mounted so the discharge grille is between 1 8m minimum and 3 75m maximum above floor level and situated as close to the doorway as possible Beware of doorway top edges structural beams door open closure devices etc which may interfere with the air stream and affect the location of the unit The air curtain must be installed level or condensate may leak out particularly if it tilts down at the left hand side looking out of the doorway from inside It is better to tilt down slightly at the right hand side as the drain tray spout is this side 3 Wall Fixing Bolt all of the wall brack
19. e Fit sensor bulb into Hot Gas wired to terminals sensor identified Black pocket on refrigerant gas T21 T22 THERMISTOR KEN pipe at top of air curtain after GAS brazing pipe connections M G and M H wire to terminals Thermistor Liquid temperature 8m 2 core cable with sensor T11 T12 THERMISTOR sensor identified White bulb factory fitted within air LIQUID curtain M G only wire to terminals Thermistor Return Air 8m 2 core cable with sensor T1 amp T2 THERMISTOR temperature sensor identified bulb factory fitted within air INLET AIR Red curtain M H only wire to terminals Thermistor Return Air 8m 2 core cable with sensor T1 amp T2 THERMISTOR temperature sensor identified bulb factory fitted within air OUTLET AIR Red curtain M H only Terminals T31 T32 Nothing connected to T31 or T32 Not Applicable M G and M H 8m 6 core cable pre Linear Expansion Valve s LEV s Install in liquid line near to air wired to 6 way colour curtain coded LEV terminals t M G and M H 8m 2 core cable pre Condensate alarm from condensate Connect to condensate pump plugged into CN31 on pump alarm system alarm terminals which must PAC AH pcb open circuit alarm and stops unit be volt free open cct alarm 9901035 2 Page 16 of 31 Remote 3 Speed Fan Switch A remote 3 speed fan switch is supplied with the air curtain so the end user can remotely select High Medium or Low fan spe
20. e PUHY P YHM and PQHY P YHM model SW4 5 ON for AUTO mode SW1 9 and SW1 10 on for Auto Re Start after power failure 9901035 2 Page 20 of 31 Mitsubishi Electric PAC AH AHU Controller Remove the access covers of the PAC AH AHU Controller and check that the dip switch settings are correct for the controller These need to be set as follows VRF PHV1000DXE HO oon Pan oe gt mr nnn oe a mn VRF PHV1500DXE HO Black rectangle indicates VRF PHV1500DXE LO VRF PHV2000DXE LO VRF PHV2000DXE HO N moveable head of dip switch ie Pa W Ea m EE These settings are the same for DAC AH MG and DAC AH MH AHU Controllers Starting the System Carry out a final inspection to ensure that all wiring is in accordance with the wiring diagram on Page 14 for a PAC AH M G or Page 15 for a for PAC AH M H and that all connections have been properly made Ensure that the refrigerant system is complete there are no leaks and there is sufficient charge of refrigerant R410A Switch on the electrical supply to the compressor unit and other City Multi system components Wait 30 seconds and switch on the electrical supply to the air curtain at the local isolator The system will boot up and when the screen on the PAR 21MAA Remote Controller becomes active it will repeat the message PLEASE WAIT After several minutes when the PLEASE WAIT message has stopped the system is ready to start DANGER Beware of Fans Starting Turn the air cu
21. e enlarged if necessary to suit the type of sensor used so it is located in the tray at the appropriate position see the manufacturer s instructions that come with the condensate pump for further information The 230v AC single phase electrical supply to operate the condensate pump will come from the air curtain Warning The air curtain condensate collection system is designed to remove condensate with the air curtain operating in cooling mode during normal summer weather conditions in countries with a temperate climate In case of extreme weather conditions or condensate pump failure which can occur it is vital that the design of the floor beneath the air curtain and its surface is such that it will not become slippery or damaged if it became wet This is similar to the conditions that might be experienced with heavy rainfall in at an open doorway or wet pedestrian foot traffic so careful consideration must be paid to the design of the floor and its surface finish If it is intended that the air curtain should not be operated in cooling mode and a condensate pump is not fitted the BMS System Centralised Controller or PAR 21MAA manual Remote Controller must be configured at commissioning so that COOL or AUTO mode can never be selected see Section Commissioning It is still recommended however that the floor design and surface be as described above in case cooling mode is used in the future and to cope with heavy rainfall or wet pedestri
22. eds to suit the local conditions The 3 Speed Fan Switch should be mounted on a wall with the Mitsubishi Electric PAR 21MAA Remote Controller if used so the end user will then have On Off temperature control and fan speed control all from one location The 3 speed fan switch is wired to terminals FAN HIGH MED and LOW in the Air Curtain using 230v mains rated 4 core double insulated cable of size 0 75mm If the remote 3 Speed fan switch is not to be used a permanent wire link must be fitted across the fan terminals in the air curtain or L the fans will not operate when the system is started This will result in an error message from the compressor unit after a time The picture opposite shows a wire link fitted across terminals FAN and MED and the air curtain would operate at Medium Fan Speed whenever the heat pump system is switched on Note Fan speed selection using the PAR 21MAA Remote Controller is not available The fan speed control logic within the PAC AH AHU Controller is not suitable for the operation of an air curtain and so is not used Sensors and 230v rated o o low voltage cables The finished wiring to the air cables curtain will be as shown in the pictures opposite wiring is shown with a 3 phase electrical supply for enabled defrost heaters Note the use of 20mm conduit with thermistor sensors and low voltage cables in a separate conduit to the mains rated Kat cables wt m PAR 21MAA Re
23. eed controller to achieve a compromise between airstream performance and noise levels This is explained in the instructions that come with the optional fan speed controller If it is intended that the air curtain is to ever operate in cooling mode switch the Mode Button on the PAR 21MAA remote controller to COOL and adjust the target temperature to 14 C minimum setting using the W TEMP Button Wait for the air curtain air stream to go cold Check the inside of the drain tray is clean there is no debris in the outlet spout there are no kinks in condensate hoses and the condensate pump will operate It is unlikely that condensate will fill the drain tray straight away so it will be necessary to fill the tray manually with water to see if the condensate removal system is working satisfactorily If an alarm sensor is fitted in the drain tray check it operates to stop the air curtain cooling if the drain tray becomes too full Test the air curtain for a time in cooling mode with all the panels and grilles fitted and if environmental conditions permit check that condensate is being collected and pumped away by the condensate pump No condensate should leak out of the air curtain At the end of the cooling test remove the inlet grilles and the bottom access panel and check that the inside of the air curtain has remained dry and that all condensate was collected by the removal system To conserve energy and carbon resources it is recommended to set up
24. ets supplied to the rear face of the unit as shown in the adjacent picture using the M6 bolts supplied Suitable wall fixing bolts not supplied need to be used to fix the brackets to the wall taking into account the type of wall and the weight of the unit see table Air Curtain Weight kg var PaviscooxeHo eo ver vzo00oxE Ho eo Step 1 Refer to Figure 1 for mounting details and drill the fixing points in the wall Step 2 Screw in the top wall bolts leaving a small gap between the head and the wall Lower the unit onto the bolts via the key hole slots in the top of the wall brackets and then screw in the bottom wall bolts Step 3 Ensure all fixing bolts are tightened and the air curtain is safely secured to the wall 3 Ceiling Suspension M10 threaded inserts are provided in the top face of the unit see Figure 1 for positions so it can be suspended on M10 threaded hanging rods not provided All suspension points must be used Ensure each of the hanging rods is secured onto a suitable structure that can support the weight of the unit see table above Screw the hanging rods into the inserts by a minimum of 20mm and fit locking nuts not supplied to prevent the rod rotating and coming away from the casing Do not screw hanging rods too far in or they could interfere with internal components It is the sole responsibility of the installer to ensure that the building fixing locations and suspension system used a
25. g mode and is not fitted with a condensate pump and drain system 9901035 2 Page 22 of 31 SG Filter Dirty Indicator The air curtain is fitted with a Filter Dirty Indicator It is located at the left hand end of the outlet grille and signals when the air curtain inlet grille filters should be vacuum cleaned or the air curtain requires servicing NB The filter dirty indicator on the PAR 21MAA Remote Controller does not function wired to a PAC AH AHU Controller The indicator states are outlined below Indicator State Reset Button N A The filter indicator schedule is based on fan operating hours For the default schedule shown schematically below the inlet grilles should be vacuum cleaned every 120hrs of fan operation every 1 to 2 weeks and a full service should take place every 480hrs of fan operation RED ON Quick reset RED ON Quick reset Fan operating hours 4 RED ON Quick reset In hrs The factory set default schedule is suitable for most applications However the actual frequency of cleaning required will depend on the environment Two alternative filter indicator schedules are available and can be selected by changing the jumper position marked 1 2 or 3 on the Filter Indicator pcb il dica S Double IT Half Filter Indicator Schedule Default Jumper position SR RED FLASH Hold 5s to reset Inlet grille vacuum interval 120 hrs 240 hrs Filter service interval 240 hrs 480 hrs 9
26. g signal sensor drainStik manufactured by Charles Austen Pumps Ltd www miniblue co uk Gravity condensate removal is not possible on these surface mounted air curtains a condensate pump must be used Maximum likely It is recommended that the Air Curtain Condensate flow rate condensate pump has the wm facility so it only operates when VRF PHV1000 DXE HO the air curtain is in cooling he Gels Ger or i eee the drain tray or by detecting a cooling differential in the airflow t should also have a pump eae ceva as much as possible when the air curtain is switched off It should have an alarm system with appropriate sensor that will give a volt free signal open circuit alarm This will stop the air curtain cooling if the condensate drain is in danger of flooding bringing up error code 2502 or 2503 and the air curtain fans will continue to operate Other indoor units on the same City Multi system are unaffected if the air curtain condensate alarm occurs There is a plastic fixing bracket with 8mm diameter hole attached to the drain tray inside the air curtain so a condensate sensor can be fixed in the tray by the installer Remove the drain tray at one end to gain better access to the plastic fixing bracket Enlarge the hole if necessary to suit the type of sensor used so it is located in the tray at the appropriate position see the manufacturers instructions that come with the condensate pump for further information The 230v AC
27. hown in the picture below Check that the thermal overheat cut out switch has not tripped Push down on the red button on the top of the thermal overheat switch if it has tripped it will click back on Connections on electric elements Ta S Ke rf gg RTE TEET a mmm dui Damm a Thermal A ee JM o i re cut out xz 3 switch Air Inlet Sensor RED 12v DC amp 230v AC Liquid Line _ relays Sensor WHITE Set the adjustable aluminium vanes of the discharge air grille so they point straight downwards over the doorway A PAR 21MAA Remote Controller should be connected and used to carry out commissioning even if the air curtain is to operate under the control of a BMS System or Centralised Controller Disconnect the remote control plug from inside the PEA PAC AH AHU Controller to use the remote controller Plug it back in again if a BMS Centralised Controller is to be used and the PAR 21MAA is disconnected after commissioning NB If the air curtain is used in AUTO mode under the control of a BMS System or Centralised Controller it is necessary to also have a PAR 21MAA Remote Controller connected 3 Mitsubishi Electric Compressor Unit For Y Series systems ensure that the appropriate dip switch has been set in the compressor unit so that the PAR 21MAA Remote Controller will operate in AUTO mode and to enable Auto Re Start after power failure if required PUMY P model SW2 5 ON for AUTO mod
28. ions that come with other components of the heat pump system e g Compressor Unit BC Controller PAR 21MAA Remote Controller BMS System Centralised Controller etc They should be kept by the building facilities manager for future reference 9901035 2 Page 6 of 31 UNPACKING THE HEAT PUMP AIR CURTAIN The following items are supplied and packaged within the Thermoscreens air curtain box City Multi Heat Pump Air Curtain Wall Brackets and Fixing Bolts ai t Ett Pa Please note end caps are supplied loose to be fitted during installation Remote 3 Speed Fan Switch If anything is missing or damaged please contact your place of purchase immediately The Mitsubishi Electric PAC AH M G AHU Controller or PAC AH M H AHU Controller comes in its original Mitsubishi Electric box It is delivered with the larger Thermoscreens air curtain box It is factory pre wired as much as possible to reduce installation time on site PAC AH M G or M H AHU Controller Check with the cross reference labels on the Thermoscreens air curtain box and the Mitsubishi Electric AHU Controller box that the correct AHU Controller is matched with the correct air curtain Other components for the heat pump system are as described above on the System Schematics on pages 2 and 3 9901035 2 Page 7 of 31 The Installer will also need to supply and install the following Condensate Pump self priming with PAR 21 MAA Remote Controller cooling mo
29. mote Controller If the air curtain is to be manually controlled by the end user a Mitsubishi Electric PAR 21MAA remote controller not supplied by Thermoscreens must be supplied and fitted by the installer This is wired to the PAC AH AHU Controller using 2 core cable Refer to the Mitsubishi Electric instructions that come with the PAR 21MAA remote controller for installation and wiring of the controller A PAR 21MAA Remote Controller is also required for commissioning purposes and if using AUTO mode with a BMS System or Centralised Controller 3 M NET Communications Cable The M NET communications cable is wired to the PAC AH AHU Controller in accordance with Mitsubishi Electric instructions Avoid isolators in the communications cables as this can lead to transmission problems 9901035 2 Page 17 of 31 GG Condensate Pump If it is intended to use the air curtain in cooling mode a suitable condensate pump not supplied by Thermoscreens must be supplied and fitted by the installer The condensate pump must be of sufficient capacity see Table below self priming and capable of providing the appropriate suction head so the pump will lift condensate out from the top of the air curtain The condensate pump can sit on the top of the air curtain or be hidden in a remote location if necessary Suitable condensate pumps with a suction head are Peristaltic or Rotary Diaphragm type We recommend the Blue Diamond rotary diaphragm type with coolin
30. om corner of the grille see adjacent picture To remove the bottom access panel unfasten the access panel securing screws one at each end and two in the centre PHV1500 and PHV2000 units and slide the panel out forwards Please note All the panels of the air curtain are covered in a protective plastic film which should be removed access panel m Electrical Supply to the Air Curtain This must be carried out AFTER the connection of the refrigerant pipework All electrical wiring and connections MUST be carried out by a competent qualified electrician in accordance with the latest edition of the IEE wiring regulations and or local statutory regulations see also Wiring Diagrams on Pages 14 and 15 e A local isolator having a contact separation of at least 3mm on all poles must be fitted in the electrical supply to the air curtain and located in an accessible position adjacent to the unit 3 phase if defrost electric heaters are required 1 phase if defrost electric heaters are not required e The appliance must be connected using cables having an appropriate temperature rating heat resistant e Ensure that the supply cables circuit breakers and other electrical installation equipment are correctly sized for the air curtain being installed See Table overleaf e A 20mm size cable gland or conduit connector should be used for the Electrical Supply into the air curtain e This appliance must be Earthed 9901035 2 Page 12 of 31
31. ondensate pump and drain system has not been fitted it is vital they understand that the air curtain must not be run in COOL or AUTO mode and that the PAR 21MAA Remote Controller has been locked so only the ON Off button functions and the air curtain operates only in HEAT mode with a fixed target temperature of 24 C If the air curtain is to be operated under the control of a BMS System or Centralised Controller explain all the settings and demonstrate the operation of the system If a condensate pump and drain system has not been fitted it is vital they understand that the air curtain must not be run in COOL or AUTO mode that it must only be operated in HEAT or FAN mode If a condensate pump and drain system has been fitted and they are going to run the air curtain in COOL mode not just AUTO mode explain that the target temperature should be adjusted to a comfortable level of cooling not necessarily to the lowest target temperature possible as this uses a lot more energy and carbon resources Ensure that all instructions and manuals are handed to the end user or their representative 9901035 2 Page 24 of 31 USER INSTRUCTIONS FOR THE AIR CURTAIN For manual control using a PAR 21MAA Remote Controller To Switch On and Off Turn the air curtain on by pressing the ON OFF Button on the PAR 21MAA Remote Controller and the air curtain fans will start within a few seconds If a 3 Speed Fan Switch is fitted adjust the fan speed to suit using
32. ote Controller Select the correct mode for the Target temperature is set incorrectly i e too low for heating or too high for cooling Air curtain discharge air stream is not heating or cooling when required conditions on the BMS system Centralised Controller or the PAR 21MAA Remote Controller or o Rectify alarm circuit which Condensate Alarm circuit is open circuit pg l one must be closed circuit for air and air curtain will not COOL curtain to operate in cooling Service air curtain as Air Curtain filters and or coil is dirty described in Section The operating mode is set incorrectly Le set on COOL when heating is required servicing Pages 26 to 28 Error Code 2502 or 2503 indicating Inspect air curtain condensate Mitsubishi condensate alarm from condensate tray and condensate pump Electric pump alarm system service or repair if necessary system is Refer to Mitsubishi Electric indicating an A variety of error codes can occur service Manual to understand error code because of a fault within the air curtain fault then inspect and repair air curtain if there is a fault If the Heat Pump Air Curtain system is still not operating correctly call for a Mitsubishi Electric Service Agent 9901035 2 Page 29 of 31 SS Warranty If any problems are encountered with the heat pump air curtain please contact your Mitsubishi Electric Service Agent Care has been taken in compiling these instructions to en
33. ote Controller until COOL appears on the display Adjust the target temperature using the A org TEMP Button between 20 C and 14 C minimum Allow time for the air stream to chill Do not necessarily use the lowest target temperature possible as this uses a lot more energy and carbon resources The temperature of the air returning to the air curtain is constantly displayed on screen 9901035 2 Page 25 of 31 SERVICING THE HEAT PUMP AIR CURTAIN Vacuum Clean the Air Inlet Grilles Filters Weekly or when the Filter Dirty Indicator shows PERMANENT RED With the air curtain switched OFF a vacuum cleaner with an extension tube and brush attachment at its end should be used to clean the face of the air inlet grilles This is important to minimise the build up of dust and lint on the air filters at the back of the grilles which will affect the performance of the air curtain This is a simple service task that can be carried out by the Cleaner or Janitor on a weekly basis from floor level without having to access the air curtain at high level This should be done weekly as a regular service task and or when the Filter Dirty Indicator shows permanent red FILTER Reset the Filter Dirty Indicator after cleaning by a quick press of the Reset Button even if the indicator has not gone red Servicing the Air Curtain suggest every 3 Months or if the Filter Dirty Indicator shows FLASHING RED Always disconnect and isolate the mains
34. picture or into a suitable terminal block NB Defrost does not occur with WY and WR2 systems so the defrost cycle electric heaters should always be disconnected on these systems 9901035 2 Page 13 of 31 1941014409 NHY 5 IN HV OVd YUM UIEUDO Aly dund 1293H AHd 39A NVYDVIG ONIYIM ra re ee ZHOS UDT ADEZ 10 ZHOS Ud e A00v yun 100p 7NO 10 Ajddng e2194 d ZHOS UdE A0OY seyd Jed YL ST OOOZAHd JHA seyd Jad YL ZI OOSTAHd JHA seyd Jad Y8g 4 OOOTAHd AYA Suey pue s19 2 H 21193 ysoujag 104 jddns je2np 4 12207 umoys p ds ue4 Wwnipe YIUMS ue4 paeds Buisn 0U H LNO ANT OPTIONAL LOW SPEED CONTROLLER J MAS L MASY XQOOO0ZAHd JHA 10 VL Z XdAOOSTAHd AXA 104 vg XdAOOOTAHd AYA 104 VET ZHOS YdT A0EZ UA S TI p p u Uday JOU Je q pue zq ONtT ISUIULLIS Aeijxne ul Ajajes SIM JeulW pue zy Wo al jd nd p uuos p p nb jou Je s u w 3 HuljedaH 21172913 YSO4aq 41 MA6 NMADEXE pun wz MAG X PUN WG T NAG TX E PUN WT UMO DEI HLYVA eI uuel IVYULNAN 8 jeulweL SAW IS Je BAIT JAI JUaUeWAd Z eui JO BHuljesado et uleqnd sie UBYM A UO DAI JAN DOUD T JeulwWaL SN dung ajesuapuo7y 104 Ajddns jed14 D9 F Page 14 of 31 9901035 2 umo 19 104 U09 NHY HAM Hg 2gd YM uenn Aly dwnd 29H AHd SYA
35. re suitable for the air curtain being installed 9901035 2 Page 9 of 31 NIVLYND IV dINNd LVAH AHd 20 SNOISNANWIG 20117 Page 10 of 31 oO CA 7A H E E SES UONOBUUOYD JUBIOBIWJOyY i SCH E d au pinbiq Se UOI DO UUOD JUBIEBLEY SCH Bi o ei SeN 10 i sajou pos doup Ije aen Ku ex SE Sun WZ LUG JO 9 HUN UL 10 Y Ga 0S9 VIN ww 3 SPO doup OLIN JO son l yzsi 00E L 008 ww q 816 002 Y N ww 9 Re 9681 00r L 008 ww g e 9672 STI 96L1 ww y E SE XAO000ZAHd XAO00SLAHd XAO000LAHd Soll BuIA IOIDUOC 3 a pue Ajddns IEOUIOeI SS g B S Y e oo peduind soy a JeSUsPUOD JO s joy SAI EUJO V 7 LLE g TTE D RE JL 3 HE E Q i E E z 2 s d a a N O Du 000 40 00S OSZ 918 Solde yiomedid opuuo x SJOAOO EJB JOOYS I uondo de F D b oN Refrigerant Pipework This must be carried out before connection of any electrical and controls cables and in accordance with the Instructions that come with the Mitsubishi Electric City Multi equipment This work must only be undertaken by a Mitsubishi Electric approved Contractor Refrigerant installation pipework sizes need to be as follows P140
36. rtain on using the ON OFF Button on the PAR 21MAA Remote Controller and the air curtain fans will start straight away Switch the Mode Button on the PAR 21MAA to heating mode and adjust the target temperature to 28 C maximum setting using the ATEMP Button If the 3 Speed fan switch is installed check that the fans run at Low speed Medium speed and High speed by operating the slider switch Check there is no mechanical noise coming from the fans at each of the three fan speeds and that all fans are working If the 3 Speed fan switch is not to be installed a wire link will have been fitted to the fan speed terminals on the air curtain Set the wire link to one of the three fan speeds LOW MED or HIGH appropriate to the site conditions see also Page 17 Check Heating and Cooling Performance In heating mode check that the air stream from the discharge grille warms up across the whole length of the air curtain after approximately 20 minutes of operation and that the air stream reaches right down across the doorway with the door open or closed If necessary the aluminium vanes of the discharge grille can be angled either inwards or outwards if this gives better penetration warming of any incoming draughts The fan speed can also be adjusted High Medium or Low to suit the conditions If an optional 9901035 2 Page 21 of 31 fan speed controller has been installed it may be necessary to re set the voltage tappings on the transformers inside the fan sp
37. s even if the indicator has not gone flashing red and hand back the unit to the end user 9901035 2 Page 28 of 31 SS Fault Conditions If the Thermoscreens Heat Pump Air Curtain System does not operate as expected refer to the fault finding table below Symptom Possible Cause Action Required Electrical power is not switched on to the Mitsubishi Electric City Multi system and at the local electrical isolator next to the Thermoscreens Air Curtain Switch on power to all components in the heat pump system and wait 30 seconds Switch on air curtain using the PAR 21MAA Remote Controller BMS System or Centralised Controller Air curtain Air curtain is not switched On fans do not operate Air Curtain fans are not wired to operate with either a 3 Speed Fan Switch or a wire link on fan terminals in air curtain Wire in 3 Speed Fan Switch or wire link see wiring diagram Problem with air curtain fan motor s or elen Weil diagram 8 l ig investigate possible cause of internal wiring or controls fault Air curtain has been running for less SR Give system sufficient time to than 20 minutes and is still warming up Ge reach operating condition or cooling down Air curtain is set to Fan Only on PAR 21MAA Remote Controller BMS System or Centralised Controller Check schedule on Controller and amend if necessary Adjust the target temperature on the BMS System Centralised Controller or PAR 21MAA Rem
38. single phase electrical supply to operate the condensate pump should come from the air curtain See wiring diagram For a condensate pump with cooling mode start and pump overrun aS recommended above use Terminals 7 Permanent Live 8 Neutral 9 Earth which provides a permanent 5A fused supply Terminal 1 Switched Live can be used if a Switched Live is required This will energise when the air curtain is operating Heat Fan or Cool and de energise when it is switched off This is also a 5A fused supply The air curtain is supplied with a 1m length of 12mm bore plastic hose ready fitted to the outlet spout of the drain tray The plastic hose can be found curled up inside the air curtain at the right hand side of the unit There are two condensate outlet holes in the casing one at the top of the unit and one at the rear both fitted with rubber plugs see Figure 1 Page 9 The plastic hose should be pushed through one of the these holes after removing the plug and connected to the condensate pump using the adapter supplied with the pump It may 9901035 2 Page 18 of 31 be necessary to extend the hose if the pump is remotely located Whichever condensate outlet hole is used for the hose the condensate must be pumped away it will not gravity drain via the lower hole at the rear of the casing the condensate must still be pumped away Optional Sheet Metal Covers Optional sheet metal covers are available to hide the various services
39. sure they are correct although Thermoscreens Ltd disclaims all liability for damage resulting from any inaccuracies and or deficiencies in this documentation Thermoscreens Ltd retain the right to change the specifications stated in these instructions Thermoscreens Ltd St Mary s Road Nuneaton Warwickshire England CV11 5AU Email sales thermoscreens com Tel 44 0 24 7638 4646 Fax 44 0 24 7638 8578 www thermoscreens com 9901035 2 Page 30 of 31 Thermoscreens Ltd St Mary s Road Nuneaton Warwickshire CV11 5AU United Kingdom Telephone 44 0 24 7638 4646 Fax 44 0 24 7638 8578 EC DECLARATION OF CONFORMITY as defined by the EC Council Directive on Machinery 2006 42 EC the Low Voltage Directive 73 23 EEC the Electromagnetic Compatibility Directive 89 336 EEC and the Pressure Equipment Directive 97 23 EC Herewith we declare that the air movement equipment designated below on the basis of its design and construction in the form brought onto the market by us in accordance with the relevant safety health and performance requirements of the Machinery If alterations are made to the machinery without prior written permission from us this declaration becomes invalid Designation of Equipment Series Type Relevant EC Council Applied Harmonised Standards Basis of Self Attestation Responsible Person Date Signed 9901035 2 THERMOSCREENS AIR CURTAINS with CITY MULTISYSTEM VRF PHV
40. t capacity see Page 18 self priming and capable of providing the appropriate suction head so the pump will lift condensate out from the top of the air curtain but can be hidden in a remote location if necessary Suitable condensate pumps are Peristaltic or Rotary Diaphragm type We recommend the Blue Diamond rotary diaphragm type with cooling signal sensor drainStik manufactured by Charles Austen Pumps Ltd www miniblue co uk Gravity condensate removal is not possible on these surface mounted air curtains a condensate pump must be used It is recommended that the condensate pump has the facility so it only operates when the air curtain is in cooling mode by detection of water in the drain tray or by detecting a cooling differential in the airflow It should also have a pump overrun to empty the drain tray aS much as possible when the air curtain is switched off It should have an alarm system with appropriate sensor fitted in the drain tray that will give a volt free signal open circuit alarm This will stop the air curtain cooling if the condensate drain tray is in danger of flooding air curtain fans will continue to operate Other indoor units on the same 9901035 2 Page 5 of 31 City Multi system are unaffected if the air curtain condensate alarm occurs There is a plastic fixing bracket with 8mm diameter hole attached to the drain tray inside the air curtain so a condensate sensor can be fixed in the tray by the installer The hole can b
41. the BMS system Centralised Controller or PAR 21MAA Remote Controller so it can operate in AUTO Mode at a target temperature of 24 C This is the normal mode of operation for the heat pump air curtain and it should run in this set up with no further adjustments automatically heating or cooling as required If the end user is to operate the air curtain with a PAR 21MAA Remote Controller set up the No 1 locking function on the controller so they can only switch the air curtain ON or OFF with no control of mode or target temperatures See user instructions for the Mitsubishi Electric PAR 21MAA Remote Controller BEWARE It is possible for the air curtain to go into cooling mode on a warm day if the BMS System Centralised Controller or PAR 21MAA Remote Controller is set in AUTO mode as described above A condensate pump and drain system must therefore be fitted if the air curtain is set in AUTO mode If it is intended that the air curtain should only operate in heating mode never in cooling mode the PAR 21MAA Remote Controller must be set to HEAT mode with an appropriate heating target temperature say 24 C and locked so only the ON OFF function on the Remote Controller works If it is to be operated from a BMS System or Centralised Controller this should be configured such that the air curtain can only operate in HEAT or FAN mode never in AUTO or COOL mode It is important this is done at commissioning if the air curtain is not to operate in coolin
42. the slider switch As set up by the Commissioning Engineer the air curtain will operate in AUTO mode automatically heating or cooling as required with a target temperature of 24 C all other buttons on the Remote Controller are locked out NB The air curtain may produce condensate during hot weather so a condensate pump and drain system must be fitted PAR 21MAA Remote Controller 3 Speed Fan Switch Turn the air curtain off by pressing the ON OFF Button on the PAR 21MAA Remote Controller and the air curtain fans will stop If the PAR 21MAA Remote Controller is not locked the following functions operate HEAT Mode Press the Mode Button on the Remote Controller until HEAT appears on the display Adjust the target temperature using the A org TEMP Button between 22 C and 28 C maximum Allow time for the air stream to heat up AUTO Mode only if condensate pump and drain system fitted Press the Mode Button on the Remote Controller until AUTO appears on the display Adjust the target temperature using the A or W TEMP Button to 24 C This is the normal mode of operation for the heat pump air curtain and it should run in this set up with no further adjustments automatically heating or cooling as required FAN Mode Fan only no heating or cooling Press the Mode Button on the Remote Controller until FAN appears on the display COOL Mode only if condensate pump and drain system fitted Press the Mode Button on the Rem

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